Nursing bottle



June`9, 1936. B. TAUF NURSING BOTTLE Filed April 21, 1934 Patented June 9,' 1936 'l iUNITED. STATES z,o43,"z1s

NURSING BOTTLE Benjamin Tauf, Chicago, Ill., assgnor to Isadore S. Rosin, Chicago, Ill.

Application April 21, 1934, Serial No. 721,801

1 2 This invention relates to a nursing bottle and more particularly to a construction in which a `flow of air takes place between the exterior and interior of the bottle or nipple to destroy or partially destroy the vacuum therein.

An object of the invention is to provide a nursing bottle and nipple equipped with extremely simple means by which air is allowed 'to flow into the bottle or nipple while, at the same time, the ow of milk therefrom is prevented. The invention also contemplates means for controlling and preventing the ow of air into the bottle. Other specic objects and advantages will appear as the specication proceeds. v

,The invention is shown, in preferred embodiments, by the accompanying drawing, in which- Figure 1 is a broken sectional view of a bottle constructed in accordance with my invention and equipped with a closure cap.; Fig. 2, a view similar to Fig. 1, but showing the neck of the bottle equipped with a nipple; Fig. 3, a developed view of the bottle neck showing the air-How passage therein; Fig. 4, a sectional view of a modified form of bottle equipped with a nipple; Fig 5,|a

developed View of the bottle neck shown in Fig.

4 with the air-flow passages therein; Fig. 6, a` broken sectional viewV of a nipple -having an airow passage therein and embodying my invention; and Fig'. 7, a transverse sectionalview, the section being taken as indicated at line 1 of Fig. 6.

In the illustration given in Figs. 1, 2, and `3, I0 designates a bottle equipped with a neck II. The neck II is provided near its base with an enlarged threaded portion I2, and at its top portion with an annular bead I3. Starting at a point between the threaded portion I2 and the which, as shown more clearly in.the' developed view of Fig. 3, extends spirally around the neck II and then cuts through the bead I3 at I5.

. A closure cap I8, as shownjmore clearly in Fig. 1, is provided at its lower end with threads I1 engaging the threadedV area I2 of the neck. When the cap is secured into the position shown in Fig. 1, the dished top wall I8 of the cap its snugly about the bead I3 and forms an effective seal therewith. It will be noted that the top wall I8 seals off the air-ow passage I5through the bead I3. Also, the interlocking threadef. portions I1 of the cap and I2 of the neck preven' the tlow of air into groove I4.

When the nipple I9 is placed in position, as shown more clearly in Fig. 2, the-lower end of the air-flow passage I4 extends below the bead bead I3 is a tiny air-110W passage or groove I4 20 of the nipple and thus air is permitted to pass 'into the groove. It will be noted that the wall of the nipple cooperates with the groove I4 to s provide an air-flow passage extending outside the nipple and neck and communicating through 5 the passage I5 in the bead I3 with the interior of the nipple and bottle neck. The air passage is preferably of sufciently small dimensions and of sufficient length to prevent the ow of milk therethrough. n

In the modication illustrated in Figs. 4 and 5, the bottle neck 2| is provided with a vertical groove 22 on one side of the bottlek and on the opposite side of the bottle, a second vertical groove 23' through the bead 24,. It will be noted 15 that the nipple I9 forms with the bead v24 a natural annular groove 25 just under the bead. With this annular passage, the diametrically op vposed vertical grooves 22 and 23 communicate.

In other words, the grooves 22 and 23 are con- 20 nected by the annular channel 25. vWith the construction shown in Fig. 4, air passes through the ygroove 22 below the bead 20 of the nipple and thence into the annular channel 25, and thence through groove 23 into the interior of the 25 nipple.

With the construction shown in Figs. 4 and 5, as well as the construction shown in Figs. 2 and 3, the flow of air into the nipple can be regulated or stopped by drawing the bead 20 of the nipple 30 upward so as to bear against the bead of the bottle neck. This movement tends to seal the -vertical passages I5 or 23, as well as the annular passage below the bead of the bottle neck. A slight pressure of the bead 20 in an upward direc- 3,5 tion does not stop the flow of air, but merely reduces the flow. l i

If desired, the neck ofthe bottle may be left plain; that is, without/grooves or openings therem, while the nippie/may be provided with air- 40 flow passages. In." the illustration given in Figs. 6 and 7, a nipple 26 is provided with a substantially vertical air passage or groove 21 communieating with a curved passage or groove V28', the 45 latter passage communicating in turn with a vertical groove 29. The groove 21 opens at the Vbottom of the bead 30 so as to admit air thereto, while the vertical groove `2!! extends above the bead of the bottle. With Ithis construction, air 50 is admitted through a tortuous passage into the interior of the nipple and bottle neck. To prevent the air-grooves from collapsing under pressure,

I prefer to reinforce the nipple vat a. point adjacent the grooves as indicated by the numeral 3|. 55

While I have shown specic methods oi' viding air-flow passages in the neck or in the nipple, it will be understood that'other forms of holes or grooves may be employed to provide for the entrance of air while preventing the out 4ilow oi milk. VGrooves may be preferred because of thesimplicity and .cheapness of construction.

VvFor example, the neck off the bottle may be -formed with the grooves illustrated without adding anything to` the cost of forming the bottle, except for the original die.

, The form'of cap shown in Fig. 1 isV pmticularly useful in connection with the present invention in that it forms a seal with the bottle neck below the entrance to the groove and also because it forms a seal with the bead of the bottle neck I claim: J l

l. In combination, a bottle having a hollow neck equipped at its top with a-bead extending laterally beyond the contour of Isaid neck, said bead having a groove therein terminating at the base of the bead, said neck being provided with a groove on the opposite side f'rom said bead groove and terminating below said beal, and a nipple engaging said neck and adapted to be pressed against said bead to close the groove therein.

2. In combination, a bottle having a neck enlarged at its top to form a laterally extending bead, said neck being of reduced size below said pe'ad and a nipple engaging said neck and pro- "vlding normally with said bead an anular channel about said neck, said bead and said neck being .provided with means co-operating with said nipple to provide non-communicating air-ow passages establishing communication between said annular channel and the interior of said nipple, said nipple being adapted to be pressed against said bead to close the air passage leading into said nipple.

BENJAMIN TAUF. 25 

